Daan and Fugu Counties are located in Yulianpao fault basin, a substru-Cture of Sonliao basin. Sediment of lacustrine and other genetic series were deposited with different spaces and times since Tertiary. Quarternary lithology is quite Complete with thickness of 60～80m,which is perfect area for studying the palaeogeography of pleistocene. For this paper, authors have described the spore-pollen composition and palaeovegetation zoning along 0～98m, 0～82m of well loggings, in Shell of Daan county and Zong shitun of Fuyu county respectively. Based on climatic-stratigraphy as well as the lithology and palaeomagnetic data, a new suggection of the lower boundary of pleistocene in developed herein.